Finite-size–dependent dispersion potentials between atoms and ions dissolved in water

P. Thiyam; M. Boström; C. Persson; D.F. Parsons; I. Brevik; B.E. Sernelius

doi:10.1209/0295-5075/106/53002

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Finite-size–dependent dispersion potentials between atoms and ions dissolved in water

Journal article

Peer reviewed

Finite-size–dependent dispersion potentials between atoms and ions dissolved in water

P. Thiyam, M. Boström, C. Persson, D.F. Parsons, I. Brevik and B.E. Sernelius

EPL (Europhysics Letters), Vol.106(5), Article 53002

2014

DOI: https://doi.org/10.1209/0295-5075/106/53002

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Abstract

A non-expanded theory is used for dispersion potentials between atoms and ions dissolved in a medium. The first-order dispersion interaction between two atoms in an excited state must account for the fact that the two atoms are coupled via the electromagnetic field and must include effects from background media, retardation and finite size. We show that finite-size corrections when two particles are close change the dispersion interactions in water by several orders of magnitude. We consider as four illustrative examples helium atoms, krypton atoms, phosphate ions, and iodide ions. We demonstrate that, due to large cancellation effects, retardation dominates the interaction for helium atom pairs in an isotropic excited state down to the very small atom-atom separations where finite-size corrections are also important.

Details

Title: Finite-size–dependent dispersion potentials between atoms and ions dissolved in water
Authors/Creators: P. Thiyam (Author/Creator) - KTH Royal Institute of Technology
M. Boström (Author/Creator) - University of Oslo
C. Persson (Author/Creator) - KTH Royal Institute of Technology
D.F. Parsons (Author/Creator) - Australian National University
I. Brevik (Author/Creator) - Norwegian University of Science and Technology
B.E. Sernelius (Author/Creator) - Linköping University
Publication Details: EPL (Europhysics Letters), Vol.106(5), Article 53002
Publisher: Institute of Physics Publishing
Identifiers: 991005541962607891
Murdoch Affiliation: Murdoch University
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 5 Physics; 5.56 Quantum Mechanics; 5.56.1685 Casimir Effects
Web Of Science research areas: Physics, Multidisciplinary
ESI research areas: Physics